Patent US3837865A successfully refreshed from Google Patents.
US3837865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Settable dental compositions
Assignee: Denton Industries Inc
•
Filing: 1972-12-08
•
Granted: 1974-09-24
•
Expires: 1992-12-08
Abstract
Abstract A two-component system is provided wherein the components are adapted to interact to form an oral, settable dental composition. The first component includes a high molecular weight, liquid polycarboxylic acid as, for example, C36 dimer acid, C54 trimer acid and mixtures thereof and, advantageously, is formulated to also include rosin and a reaction rate activator such as acetic acid. The second component contains a metallic base such as zinc oxide or a mixture of zinc oxide and magnesium oxide in a suitable fluid carrier. The components interact to form a solid, cementitious, coherent mass which is substantially devoid of odor and taste during oral application.
Inventors
- 👤 M Pellico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:50
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/90; A61K6/80; A61K6/884; A61K6/887; A61K6/889
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
32 words
A method according to claim 1 wherein the metallic base is present in an amount from about 0.25 to 3.0 parts by weight per part 1.0 part by weight of polycarboxylic acid.
Claim 2
Dependent Claim
36 words
A method according to claim 1 wherein the reaction rate activator is present in an amount from about 0.5 percent by weight to about 5.0 percent by weight based on the weight of the polycarboxylic acid.
Claim 3
Dependent Claim
31 words
A method according to claim 1 wherein component A includes rosin in an amount from about 0.3 to about 1.3 parts by Weight per 1.0 part by weight of polycarboxylic acid.
Claim 4
Dependent Claim
17 words
A method according to claim 1 wherein the polycarboxylic acid of component A is C36 dimer acid.
Claim 5
Dependent Claim
17 words
A method according to claim 1 wherein the polycarboxylic acid of component A is C54 trimer acid.
Claim 6
Dependent Claim
16 words
A method according to claim 1 wherein the metallic base of component b is zinc oxide.
Claim 7
Dependent Claim
22 words
A method according to claim 1 wherein the metallic base of component B is a mixture of zinc oxide and magnesium oxide.
Claim 8
Dependent Claim
43 words
A method according to claim 4 wherein the polycarboxylic acid of component A is C36 dimer acid, the reaction rate activator of component A is acetic acid and the metallic base of component B is a mixture of zinc oxide and magnesium oxide.
Claim 9
Dependent Claim
137 words
A solid, coherent, cementitious, dental composition prepared by interacting: component A containing (i) a polycarboxylic acid selected from the group consisting of C36 dimer acid, C54 trimer acid and mixtures thereof, and (ii) a reaction rate activator selected from the group consisting of aliphatic organic acids having from about 2 to about 10 carbon atoms, calcium, magnesium and zinc salts of said acids and mixtures thereof in an amount from about 0.25 percent by weight to about 10% by weight based on the weight of the polycarboxylic acid, and component B containing a metallic base selected from the group consisting of oxides and hydroxides of zinc, magnesium, calcium, copper and mixtures thereof, said metallic base being present in an amount from about 0.1 to about 4.0 parts by weight per 1.0 part by weight of polycarboxylic acid.
References Cited (Backward Citations)
US3028247A
Cited
US3429817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |